Versatile voltage-controlled impedance configuration

摘要

A new configuration is introduced which, apart from realising thenlinearised voltage-controlled R, L and C elements (like a previouslynknown scheme), can also realise ideal voltage-controllednfrequency-dependent negative resistance (Z(s)=1/Ds2) andnideal voltage-controlled frequency-dependent negative conductancen(Z(s)=Ms2) elements from the same topology. The newnstructure, employs the same number of opamps and a single FET, as in thenearlier scheme but requires a relatively smaller number of passivenelements and realises two additional types of elements. The validity andnutility of the proposed configuration is demonstrated by experimentalnresults